Move anchors back into place

Author: hugovk

docs/installation/basic-installation.rst

@@ -87,11 +87,3 @@ and :pypi:`olefile` for Pillow to read FPX and MIC images::
         The `Pillow FreeBSD port
         <https://www.freshports.org/graphics/py-pillow/>`_ and packages
         are tested by the ports team with all supported FreeBSD versions.
-
-
-.. _Building on Linux:
-.. _Building on macOS:
-.. _Building on Windows:
-.. _Building on Windows using MSYS2/MinGW:
-.. _Building on FreeBSD:
-.. _Building on Android:

docs/installation/building-from-source.rst

@@ -1,3 +1,9 @@
+.. _Building on Linux:
+.. _Building on macOS:
+.. _Building on Windows:
+.. _Building on Windows using MSYS2/MinGW:
+.. _Building on FreeBSD:
+.. _Building on Android:
 .. _building-from-source:
 
 Building From Source